Bimetallic thermometer calibration
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Many bimetallic thermometers are used on storage tanks; whether they are newly installed or have been in use for a year, many of them fail the inspection tests, showing severe temperature deviations. Is it a manufacturing issue or a verification issue? I’m really confused ?
Even if it’s a problem with the measuring station, what can you do about it? Have the leader have a good conversation with the Metrology Institute
. . . Bimetallic precision is not very high to begin with
Let’s take a look at the structure and materials instead!
I don’t think so! All the thermometers that we send to the calibration institute for testing meet the required standards; it’s just that the testing cost is quite high
Our tests show that 10 percent are defective; it’s probably related to the environment and medium in which they are used.
This shouldn’t be the case! The technology is relatively mature.
First is the issue of precision, followed by the issue of quality, and then the issue of operating conditions. Under normal circumstances, the errors at the time of manufacture are within acceptable limits; as mentioned above, this technology is already quite mature. Of course, if you detect 10% defective items, then quality issues can be considered
We use Wanwo bimetallic thermometers. Even those that are brand new have a low pass rate when tested. In order to obtain the certification, we have to ask them to communicate with the metrology institute, and after each such consultation, a qualified report is issued
I’m sure it’s a quality issue; this also involves your company’s procurement department or other managers! Can’t say much!